Covid-19 Living Data

Study registration: *
Publication Stowe J, PHE Publishing, 2021
Dates: 2021-04-12 to 2021-06-04
Funding: Not reported/unclear
Conflict of interest: NR

Methods
Methods	Study design:Test-negative Description of participants: Symptomatic COVID-19 patients Inclusion criteria: All symptomatic cases with Delta variant between 12th April and 4th June 2021 Exclusion criteria: * Follow-up duration (months): 1.77
Vaccines:	1 or 2 doses of BNT162b2 1 or 2 doses of ChAdOx1-S 1 or 2 doses of either BNT162b2 or ChAdOx1-S
Variant description :
Variant description :	Variant name: Delta Evidence: Direct evidence (effectiveness determined by sequencing cases)
Documents available	Protocol NR Statistical plan NR Data-sharing stated: NR Data accessibility: NR
General comment	Some concerns over the possibility of uncontrolled confounding given the observational nature of the data, and uncertainty in how missing data were addressed.